Zunanji navoj za nakit telo redko pečat, in lahko shed delcev.

Primeri nakita slabo izdelani notranji navoj

*Tako jaz vidim to, vi moči obstati zelo čisto in natančno Šilo, in še vedno cenijo izboljšanje, če imate delo z gladko nakit. Ta slika je zavajanje. Ni zanikala, da so ljudi uporablja zunanje nakit. Ne glede na to, kako dobro si dal nakit, ali stranko zdravi, To je še vedno ne tako gladko, katere zadeve, ko je spremenila nakit.

Internal vs. External Threading

More information related to the article in Point! 57 stran 10 “Step-down threading”

Look for the following qualities in well manufactured Internal or External jewelry:

• Free of nicks and burrs, no polishing compounds, threads well cleaned
• Use of appropriate metals. Mill Specifications and MSDS / ISO sheets available from manufacturer that certify ASTM F-138 Steel for surgical implant or ASTM F136 or F67 Titanium for surgical implant. Current APP jewelry standards here: http://www.safepiercing.org/piercing/jewelry-standards/

Look for the following qualities in poorly manufactured Internal or External jewelry:

• Burrs
• Tooling marks
• Not enough or too much threading (exposed screw threads when closed)

Look for the following qualities in well manufactured Internal jewelry:

• Smooth round ends.
• Universal threading standard (1.2mm on 14 in 12 Merilnik, .080 na 10 Merilnik)
• Ball screws all the way down, no gaps or cavities at the connection
• Posts should be solid.
• Often a good manufacturer of internal will have better quality control throughout the range but this is not always the case.

Look for the following qualities in poorly manufactured Internal jewelry:

• Flat cut ends and/or hollow posts.
• If the ball is not countersunk there will be a gap to collect waste possibly irritate the piercing. Poorly fitted balls allow waste to collect in the counter sinking of the ball. Even the best internally threaded jewelry will leave a small gap where a countersunk ball fits over the post.
• Sharp edges, threaded insert falling out, inserts made from other than implant materials.
• More expensive to make, passed on to client, less competitive.
• Higher degree of technical skill is required for a smooth jewelry transfer. Use of guide wire “snips” or pin-coupling / cuplink tapers facilitates an easier transfer, reducing lost connections.

Procedural Application of well manufactured Internal jewelry:

• Can be used with Piercing needle or Cannula methods.
• Is appropriate in new, newly healed or well healed piercing.

Look for the following qualities in well manufactured External jewelry:

• Threads may be easier to clean than internal, (holds less polishing compound).
• The end of the thread is rounded.
• There is less problem with inserting external in a well healed and seasoned piercing, providing the person has experience with the jewelry.
• Obviously tapers are often needed with either style of jewelry.
• The vast majority of piercers are using externally threaded jewelry without complications.
• Countersinking of the ball is not an issue as the ball should fit over the stem completely and lock tight.
• Less costly than internally threaded.
• More readily available in a wider variety of designs.
• There isn’t always, but there tends to be greater inconsistencies in quality even sometimes within the same manufacturer’s range.

Look for the following qualities in poorly manufactured External jewelry:

• Theoretical problem of very small step-down thread design that fits into the piercing needle, could be vulnerable to snapping.
• Poorly fitted balls will allow for collection of waste in the hollow ball.
• Insufficient number of threads. Threads or ball can strip.

Procedural Application of well manufactured External jewelry:

• Mixed reviews on use with piercing needles.
• Many piercers express they can feel the jewelry snagging during the jewelry transfer.
• Frequently this is felt by the client.
• Step-down external threaded jewelry seems to minimize this.

 

• Acceptable for use with Cannula style of Piercing.
• Many practitioners find it easier to perform the jewelry transfer with a Cannula.
• Some shops that pierce with internal will use external in well-healed piercings.

Piercing Needles and Cannula (Catheters, Introcan, itd):

• Like with internal and external there are good piercings needles and bad, good cannula and bad.

Piercing Needle-

A quality piercing needle by Industrial Strength LLC

Advantage:

• Less bleeding than when using cannula.

Disadvantage:

• Harder to do jewelry transfers than cannula, possibility for a greater percentage of transfer failure.

Cannula-

Introcan cannula by Braun

Advantage:

• Sharper than low quality piercing needles.
• Easier jewelry transfer.
• Pre-sterilized, hospital grade, gamma-radiation, more readily available than piercing needles.
• Gamma-radiation sterilization is the preferred method for sterilization of single-use items for many in the medical field. An advantage over autoclaving is that no spore test is needed.

Disadvantage:

• In extremely rare cases the plastic sleeve collapses.
• Sleeve can be rough if cut.
• Increased bleeding in some piercings, as compared to piercing needles because the sleeve is slightly larger than than the jewelry.
• Adds time to the piercing process waiting for the tissue to contract and for the bleeding to coagulate.
• To avoid bleeding some piercers have used smaller cannula size than the jewelry, this creates a tight fit in the sleeve making the jewelry transfer a slight stretch and less smooth.
• More expensive than piercing needles.

From the Association of Professional Piercers educational presentation materials